Render crash

Yes, I have run into yet another problem. This time, whenever I try to load up a singleplayer or join a multiplayer, I will instantly crash. It seems to be caused by a rendering issue.
Description: Unexpected error

java.lang.NoClassDefFoundError: dev/stashy/soundcategories/CategoryLoader
at java.base/java.lang.ClassLoader.defineClass1(Native Method)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1012)
at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:150)
at net.fabricmc.loader.impl.launch.knot.KnotClassLoader.defineClassFwd(KnotClassLoader.java:223)
at net.fabricmc.loader.impl.launch.knot.KnotClassDelegate.tryLoadClass(KnotClassDelegate.java:174)
at net.fabricmc.loader.impl.launch.knot.KnotClassLoader.loadClass(KnotClassLoader.java:155)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
at net.minecraft.class_338.handler$zcd000$messageSound(class_338.java:528)
at net.minecraft.class_338.method_1815(class_338.java:237)
at net.minecraft.class_338.method_1804(class_338.java:197)
at net.minecraft.class_338.method_1812(class_338.java:191)
at net.minecraft.class_746.method_7353(class_746.java:433)
at net.minecraft.class_761.handler$zop000$renderChunkLayerSolid(class_761.java:6598)
at net.minecraft.class_761.method_3251(class_761.java:2558)
at net.optifine.shaders.ShadersRender.renderShadowMap(ShadersRender.java:454)
at net.optifine.shaders.Shaders.beginRender(Shaders.java:4976)
at net.minecraft.class_757.method_3188(class_757.java:1471)
at net.minecraft.class_757.method_3192(class_757.java:1158)
at net.minecraft.class_310.method_1523(class_310.java:1122)
at net.minecraft.class_310.method_1514(class_310.java:737)
at net.minecraft.client.main.Main.main(Main.java:236)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:416)
at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:77)
at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23)
Caused by: java.lang.ClassNotFoundException: dev.stashy.soundcategories.CategoryLoader
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
at net.fabricmc.loader.impl.launch.knot.KnotClassLoader.loadClass(KnotClassLoader.java:158)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
... 28 more


A detailed walkthrough of the error, its code path and all known details is as follows:
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-- Head --
Thread: Render thread
Stacktrace:
at java.base/java.lang.ClassLoader.defineClass1(Native Method)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1012)
at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:150)
at net.fabricmc.loader.impl.launch.knot.KnotClassLoader.defineClassFwd(KnotClassLoader.java:223)
at net.fabricmc.loader.impl.launch.knot.KnotClassDelegate.tryLoadClass(KnotClassDelegate.java:174)
at net.fabricmc.loader.impl.launch.knot.KnotClassLoader.loadClass(KnotClassLoader.java:155)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
at net.minecraft.class_338.handler$zcd000$messageSound(class_338.java:528)
at net.minecraft.class_338.method_1815(class_338.java:237)
at net.minecraft.class_338.method_1804(class_338.java:197)
at net.minecraft.class_338.method_1812(class_338.java:191)
at net.minecraft.class_746.method_7353(class_746.java:433)
at net.minecraft.class_761.handler$zop000$renderChunkLayerSolid(class_761.java:6598)
at net.minecraft.class_761.method_3251(class_761.java:2558)
at net.optifine.shaders.ShadersRender.renderShadowMap(ShadersRender.java:454)
at net.optifine.shaders.Shaders.beginRender(Shaders.java:4976)
at net.minecraft.class_757.method_3188(class_757.java:1471)